I just received 3 of these 5970's (finally) got them amazon last week. I successfully got them installed on a msi gd70 with a silverstone 1200 running linuxcoin. I crashed the rig a few times overclocking. I now have them running stable at 725/400. will burn them in for a day or so and try to overclock them again.I guess what I am saying is dont expect them to act like 2 5870's packed into 1 card.

I just received 3 of these 5970's (finally) got them amazon last week. I successfully got them installed on a msi gd70 with a silverstone 1200 running linuxcoin. I crashed the rig a few times overclocking. I now have them running stable at 725/400. will burn them in for a day or so and try to overclock them again.I guess what I am saying is dont expect them to act like 2 5870's packed into 1 card.

Running 3 5970's (6 gpus) on a 1200W psu and overclocking them might be pushing the power supply a bit too far.

Even if it has enough juice, you will need ~80 amps on the +12V rails (or rail) just to keep them running at full load.

Top PSUs are rated for quad crossfire compliance at the most. They don't even make specifications for 6-8 gpu setups. However I find thermaltake 1500W psus able to run even three 6990's at stock.